(19)

(11)

EP 3 452 729 A1

(12)

(43) Date of publication: 13.03.2019 Bulletin 2019/11 (21) Application number: 17792341.4 (22) Date of filing: 05.05.2017

(51) International Patent Classification (IPC):  F04D 29/70(2006.01) F16J 15/44(2006.01) F16J 15/40(2006.01) (86) International application number: PCT/CA2017/050548 (87) International publication number: WO 2017/190250 (09.11.2017 Gazette 2017/45)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: MA MD (30) Priority: 06.05.2016 CA 2929281 (71) Applicant: Optimal Pump Solutions Inc. Calgary, Alberta T2G 4A3 (CA)	(72) Inventor: PATTON, Christopher Sean Calgary Alberta T2T 5C1 (CA) (74) Representative: Engelhard, Markus  Boehmert & Boehmert Anwaltspartnerschaft mbB Pettenkoferstrasse 22 80336 München 80336 München (DE)